How to open translucent lock screen and login interface in Win10

The Win10 interface style is modernized. In Build 9888 and 9901, the lock screen and login interface will be translucent, but you have to open it to see it, because Win10 is off by default. How does Win10 open the translucent lock screen and login interface?
Open the Registry Editor and navigate to the following path in the left branch navigation:
HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Authentication\\LogonUI\\TestHooks
Note: It is recommended to back up the registry before modification ( "How to backup the registry in Win10 preview")
If you find the Threshold value in the right window, double-click the value to open the "Edit DWORD (32-bit) value" window, and change the value data of Threshold to 1. If you want to restore the traditional lock screen and login interface in the future, just change the Threshold value data to 0.
Close the registry editor, press the Win + L shortcut key lock screen (or log off the system) to see the new translucent lock screen interface. As shown in the figure:

Then slide up the lock screen to see the new login screen. One of the most obvious improvements is to select the login user on the left side. As shown in the figure:

Win10 opens the translucent lock screen and login interface. You need to modify the registry. The recovery method only needs to restore 0 to 1 in the changed place. Of course, everyone believes that the lock screen and login interface of the official Win10 version will be more mature than the current interface.